AP Chemistry
6.3 Heat Transfer and Thermal Equilibrium
6.1 Endothermic and Exothermic Processes
A student dissolves a sample of solid ammonium nitrate, \(\text{NH}_4\text{NO}_3\text{(s)}\), in \(100.0\text{ g}\) of distilled water in an insulated coffee-cup calorimeter. The initial temperature of the water is \(22.0\text{ }^\circ\text{C}\), and the final temperature of the solution is \(15.5\text{ }^\circ\text{C}\). Assuming the calorimeter absorbs negligible heat, which of the following correctly classifies the dissolution process and provides the correct justification?
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